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programming languages Online Quiz - 324

Description: programming languages Online Quiz - 324
Number of Questions: 20
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Tags: programming languages
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What is the output of the following code when compiled and run? Select two correct answers. public class Question01 { public static void main(String[] args){ int y=0; //line 1 int x=z=1; //line 2 System.out.println(y+","+x+","+z); //line 3 } }

  1. Prints 0,1,1

  2. Error during compilation at line 1

  3. E. Error during compilation at line 2

  4. Error during compilation at line 3


Correct Option: C,D

How do you write an infinite loop using the for statement

  1. while(true){ }

  2. for(i=0;i>1;i--){ i++ }

  3. for ( ; ; ) { }

  4. while(false){ }


Correct Option: C

Which is not the keyword

  1. java

  2. boolean

  3. super

  4. this


Correct Option: A

Which is not the scripting language

  1. Java Tcl

  2. JRuby

  3. Sleep

  4. JavaOne


Correct Option: D

Java was intially called as

  1. green

  2. Oak

  3. bean

  4. applet


Correct Option: B

Java is developed by

  1. Dennis Ritchie

  2. Bjarne Stroustrup

  3. James Gosling

  4. Paul Allen


Correct Option: C

What is the output for the following expression = ceil {-4.5}

  1. 5

  2. -4

  3. 4

  4. -5


Correct Option: B

In the command search-string parameter -s is used for

  1. Name of textbuffer in which each line of that does not contain

  2. Name of textbuffer in which the line numbers of that

  3. All the above

  4. None of the above


Correct Option: A

What command should be used to ask the user a question which requires a yes or no response?

  1. what

  2. ?

  3. yes

  4. prompt


Correct Option: C

What is the output for the following expression = ceil {-4.5}

  1. 5

  2. -4

  3. 4

  4. -5


Correct Option: B

What is equalent ScriptLINK command for "filestat"

  1. =

  2. ?

  3. @

  4. +


Correct Option: B

Select valid scriptlink commands

  1. lines2list

  2. list2lines

  3. select

  4. showbind


Correct Option: A,C

You have the following code: public class Java { public static void main (String [] args) { double dSyntaxs; System.out.println("Its: " + dSyntaxs); } public void TrueSyntax() { System.out.println("True syntax is a work of art."); } } What would the output be? Incorrect. The correct option is as follows

    1. Its: 1
    1. Its: 0
    1. Its: true
    1. Its: 0.0
    1. A compiler error

Correct Option: E

Why will the following code not compile? Boolean b = new Boolean("false"); if (b) {}

    1. The quotes should not be around false.
    1. New should be after Boolean.
    1. A boolean is expected not a Boolean.
    1. The Semi-colon should not be used.

Correct Option: C

You have the following class definition: public class Language {} You need constructors to provide developers with two methods of object instantiation. Developers should be able to instantiate the object with either a String argument or no argument. What should you do to achieve this goal? (Choose all that apply.) You have not made any correct choices. The correct options are as follows

    1. Add Language (string Name) {}
    1. Add Language ( ) { }
    1. Add Language (String Name) { }
    1. Allow the compiler to add a default constructor.

Correct Option: A,D

which option is a declaration of an array of Strings, called sSyntax, containing 50 elements shared between instances of a class? Incorrect. The correct option is as follows

    1. static String [50] sSyntax = new String[];
    1. String [] sSyntax = new String[50];
    1. static String [] sSyntax = new String[50];
    1. static string [] sSyntax = new string[50];

Correct Option: C

21Which statement is correct concerning the assertion mechanism?

  1. 1 This is the pseudocode representing the two types of assert statements:

  2. 2 Always handle an AssertionError in a try-catch-finally block.

  3. 3 This is the pseudocode representing the two types of assert statements:

  4. 4 Assertions of the 'assert booleanExpression;' variety should not be disabled before distributing the software.


Correct Option: A

. Which line of the following code would make the test object eligible for garbage collection? (Line numbers are included only for clarity's sake) 1. public class Garbage { 2. public static void main(String [] args) { 3. StringBuffer test = new StringBuffer("hello"); 4. System.out.println(test); 5. test = null; 6. } 7. }

    1. 3
    1. 4
    1. 5
    1. No lines enable the garbage collection of the test object.

Correct Option: C

You have the following class definitions: public abstract class Vehicles { } public class Bus { } public class MyClass { public Vehicles go() { return new Bus(); } } What change would have to be made to allow this code to compile?

    1. Change public abstract class Vehicles { } to public class Vehicles { }
    1. Change public class Bus { } to public class Bus extends Vehicles { }
    1. Change public class MyClass { to private class My Class {
    1. Change public abstract class Vehicles { } to protected abstract class Vehicles { }

Correct Option: B

Which modifier is used to prevent a method from being overridden?

    1. final
    1. native
    1. local
    1. protected

Correct Option: A
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